I know I'm supposed to write something here, but I can't. I'm still picking up pieces of my mind from the floor because it was FUCKING BLOWN TO BITS BY THIS MOVIE'S AWESOMENESS.

Here's a quick synopsis, courtesy of Wikipedia:

TMNT: Turtles Forever is a direct-to-DVD/made-for-tv animated movie that was produced by 4Kids Entertainment. Produced in celebration of the 25th anniversary of the Teenage Mutant Ninja Turtles franchise, the movie teams up different incarnations of the titular heroes—chiefly the light-hearted, child-friendly characters from the 1987 animated series and the darker cast of the 4Kids' own 2003 animated series—in an adventure that spans multiple parallel universes.

Two sets (for most of the movie's running time anyways. Teehee) of turtles, a multiverse, a ton of laughs and badassery. Seriously, that is all you need to know.